:root {
    --bg-gradient: linear-gradient(135deg, #f3e7e9 0%, #e3eeff 100%);
    --text-color: #5c6b7f;
    --font-family: 'Outfit', sans-serif;

    /* Bubble Gradients */
    --task-gradient: linear-gradient(135deg, #e0ffe9 0%, #b3f2cc 100%);
    --travel-gradient: linear-gradient(135deg, #ffe0e0 0%, #ffb3b3 100%);
    --notes-gradient: linear-gradient(135deg, #e0e7ff 0%, #b3c7ff 100%);
    --diet-gradient: linear-gradient(135deg, #fff3cd 0%, #ffe69c 100%);

    /* Shadows */
    --bubble-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
    --bubble-hover-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    background: var(--bg-gradient);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Navbar */
.navbar {
    padding: 1.5rem 2rem;
    position: relative;
    z-index: 10;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.nav-logo {
    height: 45px;
    width: auto;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.site-name {
    font-weight: 800;
    font-size: 1.5rem;
    color: #5c6b7f;
    letter-spacing: -0.5px;
}

/* Main Content */
.container {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    text-align: center;
    position: relative;
    z-index: 5;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 0.5rem;
    margin-top: 0;
    color: #4a5568;
    text-shadow: 2px 2px 0px rgba(255, 255, 255, 0.5);
}

.hero p {
    font-size: 1.4rem;
    margin-bottom: 4rem;
    color: #718096;
    font-weight: 600;
}

/* Bubble Grid */
.bubble-grid {
    display: flex;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
    max-width: 1200px;
}

.bubble-link {
    text-decoration: none;
    color: #4a5568;
    width: 220px;
    height: 220px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    box-shadow: var(--bubble-shadow);
}

.bubble-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
}

.icon {
    font-size: 4rem;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.1));
}

.label {
    font-weight: 800;
    font-size: 1.2rem;
    letter-spacing: 0.5px;
}

/* Bubble Variants */
.task-bubble {
    background: var(--task-gradient);
}

.travel-bubble {
    background: var(--travel-gradient);
}

.activity-bubble {
    background: var(--notes-gradient);
}

.diet-bubble {
    background: var(--diet-gradient);
}

/* Hover Effects */
.bubble-link:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: var(--bubble-hover-shadow);
}

.task-bubble:hover {
    box-shadow: 0 15px 35px rgba(46, 204, 113, 0.25);
}

.travel-bubble:hover {
    box-shadow: 0 15px 35px rgba(255, 107, 107, 0.25);
}

.activity-bubble:hover {
    box-shadow: 0 15px 35px rgba(111, 118, 255, 0.25);
}

.diet-bubble:hover {
    box-shadow: 0 15px 35px rgba(255, 193, 7, 0.25);
}

/* Background Decorations */
.bg-decoration {
    position: absolute;
    pointer-events: none;
    z-index: 0;
    opacity: 0.6;
}

.circle-1 {
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.8) 0%, rgba(255, 255, 255, 0) 70%);
    top: -50px;
    right: -50px;
    border-radius: 50%;
}

.circle-2 {
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(224, 255, 233, 0.4) 0%, rgba(255, 255, 255, 0) 70%);
    bottom: 10%;
    left: 5%;
    border-radius: 50%;
}

.circle-3 {
    width: 150px;
    height: 150px;
    background: radial-gradient(circle, rgba(224, 231, 255, 0.4) 0%, rgba(255, 255, 255, 0) 70%);
    top: 20%;
    left: 15%;
    border-radius: 50%;
}

.star-1 {
    top: 15%;
    right: 20%;
    font-size: 2rem;
    color: #ffd700;
    opacity: 0.3;
    animation: twinkle 3s infinite ease-in-out;
}

.star-2 {
    bottom: 20%;
    right: 10%;
    font-size: 1.5rem;
    color: #ffd700;
    opacity: 0.3;
    animation: twinkle 4s infinite ease-in-out 1s;
}

@keyframes twinkle {

    0%,
    100% {
        opacity: 0.3;
        transform: scale(1);
    }

    50% {
        opacity: 0.6;
        transform: scale(1.2);
    }
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    color: #718096;
    font-size: 0.9rem;
    font-weight: 600;
    position: relative;
    z-index: 10;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .bubble-grid {
        gap: 2rem;
    }

    .bubble-link {
        width: 160px;
        height: 160px;
    }

    .icon {
        font-size: 3rem;
    }

    .label {
        font-size: 1rem;
    }
}